Acid solution preparation and injection device for lead storage battery

Abstract

Provided is an acid solution preparation and injection device for a lead storage battery. An acid solution injection mechanism comprises the lead storage battery, acid solution injection tubes and a movable support, the movable support comprises a cylinder, a connecting plate and a pipe rack, the upper surface of the lead storage battery is provided with 6 acid solution inlets, the six acid solution injection tubes are arranged on the tube rack successively, each acid solution injection tube body is provided with a concentrated sulfuric acid liquid inlet and a purified water inlet, and the lower end of each acid solution injection tube body is provided with a battery acid solution outlet; and an acid solution preparation mechanism comprises a primary cell module, a sulfuric acid liquid distributor and a purified water distributor, the primary cell module is composed of a positive electrode, a negative electrode and a salt bridge, a liquid drawing port in the top of the positive electrode is connected with an inlet end of the sulfuric acid liquid distributor, an outlet end of the sulfuric acid liquid distributor is connected with the concentrated sulfuric acid liquid inlets, the inlet end of the purified water distributor is connected with a water tank, and the outlet end of the purified water distributor is connected with the purified water inlets. Sulfuric acid solution of a needed concentration is prepared in real time and quantitatively injected into the lead storage battery in certain position, so that the acid addition precision and efficiency can be ensured.

Description

technical field [0001] The invention relates to the field of lead storage battery manufacturing, in particular to an acid solution preparation and injection device for lead storage batteries. Background technique [0002] At present, in the manufacturing process of lead-acid batteries, the acid injection technology of batteries is mostly adopted. Adding acid to batteries is the key that directly affects important performances such as the length of one-time discharge and the length of cycle life of the battery. For different types of lead-acid batteries, the amount of acid to be added is different, and the accuracy required is also different. The existing acid-adding technology uses manual operation to fill individual batteries one by one, and adopts the method of vacuuming first and then injecting acid. The first acid solution It is configured in advance, and the accuracy of acid addition cannot be guaranteed. During the acid filling process, after the remaining acid solutio...

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Problems solved by technology

For different types of lead-acid batteries, the amount of acid to be added is different, and the accuracy required is also different. The existing acid-adding technology uses manual operation to fill individual batteries one by one, and adopts the method of vacuuming first and then injecting acid. The first acid solution It is configured in advance, and the accuracy of acid addition cannot be guaranteed. During the acid filling process, after the remaining acid solution after the previous acid addition is mixed with the acid solution newly drawn from the acid cooler, the temperature of the mixed acid solution changes, causing After the acid is added to the battery, it will react immediately and generate a certain amount of gas, which will cause the acid liquid in the battery to overflow, which will easily cause problems such as terminal corrosion, failure to add acid or insufficient amount of acid, and will also cause the battery to heat up, expand and deform. And the poor charging consistency of the battery, insufficient capacity, etc.; the second 12V lead-acid battery is divided into 6 compartments, and generally a single acid injection hole is provided on the top of the battery. To inject sulfuric acid electrolyte, the traditional method is to use six independent guide tubes to press and fix the six acid injection holes on the top of the battery, and then use a vacuum pump to inject a certain amount of acid into the battery, but in the actual production process In the process, since the diversion tubes are singlely connected to the acid injection holes, deviations and displacements are likely to occur, and the injection quantity cannot be consistent, and it is easy to cause acid spillage

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